In case you don't know: there is a #LaTeX package on CTAN called #realhats, that can put Santa hats on your nice Quantum Mechanics operator friends.
#GitHub: https://github.com/mscroggs/realhats
#CTAN: https://ctan.org/pkg/realhats
Homepage (with links to blog posts on hot to make this package): https://www.realhats.xyz/
realhats v7.1 by Matthew W. Scroggs & Adam K. Townsend
realhats is a package for LATEX that makes the \hat command put real hats on
symbols.
he command \hat will choose a hat randomly from eighteen hats:
a beret
a Santa hat
a sombrero
a witch’s hat
a top hat
a Ash’s hat
a fez
a cowboy hat
a crown
a D dunce’s cap
a policeman’s hat
a Scottish hat
a birthday hat
a mortarboard
a aperiodic tile (white)
a aperiodic tile (gray)
a aperiodic tile (light blue)
a aperiodic tile (blue)
Two versions of Schrodinger equation, where the ``hat''s on the letters indicating operators are replaced by Santa hats.